The Aker Leather 101 Comfort-Flex shoulder holster system is the latest version of our first and most popular shoulder holster, developed almost 30 years ago! Each 101 shoulder rig is designed and manufactured in our California factory using materials primarily sourced from the USA. We use a premium full grain leather from North American cowhide, which as a tooling leather is perfect for shoulder holsters since it retains the deep mold of the weapon and magazines, insuring years of use without losing shape as it becomes more comfortable over time. For both black and tan holsters, we start with a natural cut of leather and either dip dye for black or hand oil for tan, giving it a distinctive color you will not find from other manufacturers. This also speaks to the detailed handwork going into each model 101, which also features nylon bonded thread, solid brass hardware, and finishing touches and flourishes only years of craftsmanship can cultivate. Fits Glock 20, Glock 21, Glock 29, Glock 30